Walker 245-1177 Mass Air Flow Sensor

Walker Mass Air Flow Sensor 245-1177

Walker Mass Air Flow Sensor 245-1177 is a direct-fit engine management replacement for select Chevrolet, GMC, Hummer, Isuzu, and Saturn applications. It is built for vehicles that need accurate airflow signal input to support proper fuel delivery and drivability.

The Walker Mass Air Flow Sensor line reflects Walker Products’ long history in fuel system and engine sensor manufacturing. For this part, the focus is on OEM-style fit and specification control, with engineering and technical support backing the product line.

Key Features

• Mass air flow sensor for emission control and engine management systems
• 5-terminal female connector
• Mounting hardware included
• No housing included
• Walker part number 245-1177
• Cross-reference: Delphi AF10147

Detailed Description

This Walker Mass Air Flow Sensor 245-1177 is used to measure incoming air volume so the engine control system can calculate fuel delivery more accurately. It is a practical replacement for vehicles such as the 2004-2008 Chevrolet Malibu, 2004-2006 Chevrolet Colorado, 2004-2006 GMC Canyon, 2006-2007 Hummer H3, and select Isuzu and Saturn models. If you are searching for a mass air flow sensor for Chevrolet Malibu, GMC Canyon, or Chevrolet Colorado applications, this part number is a relevant match for the listed vehicles.

Walker Products states that its engine sensors are manufactured to meet or exceed OEM standards and specifications, with ISO 9001/IATF16949 quality systems supporting production control. The 245-1177 is part of that engine sensor lineup and is intended for accurate replacement service on the listed fitments.

What It Helps Address

• Rough idle caused by incorrect airflow signal input
• Hesitation or stumble during acceleration
• Fuel trim issues related to inaccurate air measurement
• Check engine light conditions tied to mass air flow sensor faults
• Poor drivability on listed Chevrolet, GMC, Hummer, Isuzu, and Saturn applications

Installation Notes and Tips

Verify connector style, terminal count, and vehicle fitment before installation. This sensor uses a female connector and 5 terminals, and the housing is not included. Inspect the intake tract, air filter, and electrical connector for contamination or damage before replacing the sensor. For best results, clear diagnostic trouble codes after installation and confirm idle quality and throttle response during a road test.

Quality Assurance

Walker Products has supplied fuel system and engine sensor components since 1946 and supports its aftermarket parts with manufacturing, engineering, product management, and technical documentation resources. The brand’s ISO 9001/IATF16949 certification reflects its production quality systems for engine management components.

Compatible Vehicles

• Fits 2004-2008 Chevrolet Malibu, N/A
• Fits 2006-2007 Hummer H3, N/A
• Fits 2007 Isuzu i-370, N/A
• Fits 2004-2007 Saturn Ion, N/A
• Fits 2004-2006 Chevrolet Colorado, N/A
• Fits 2004-2006 GMC Canyon, N/A
• Fits 2006 Isuzu i-280, N/A
• Fits 2006 Isuzu i-350, N/A